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bug 580128 - Implement XrayWrapper::toString. r=jst

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This commit is contained in:
Blake Kaplan 2010-10-10 15:36:32 -07:00
parent 41aa9a74c8
commit c3afb44113
1 changed files with 48 additions and 1 deletions
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49
js/src/xpconnect/wrappers/XrayWrapper.cpp
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@ -344,6 +344,39 @@ wrappedJSObject_getter(JSContext *cx, JSObject *holder, jsid id, jsval *vp)
return true;
}
static JSBool
XrayToString(JSContext *cx, uintN argc, jsval *vp)
{
JSObject *wrapper = JS_THIS_OBJECT(cx, vp);
if (!wrapper->isWrapper() || !WrapperFactory::IsXrayWrapper(wrapper)) {
JS_ReportError(cx, "XrayToString called on an incompatible object");
return false;
}
JSObject *holder = GetHolder(wrapper);
JSObject *wrappednative = GetWrappedNativeObjectFromHolder(cx, holder);
XPCWrappedNative *wn = GetWrappedNative(wrappednative);
XPCCallContext ccx(JS_CALLER, cx, wrappednative);
char *wrapperStr = wn->ToString(ccx);
if (!wrapperStr) {
JS_ReportOutOfMemory(cx);
return false;
}
nsAutoString result(NS_LITERAL_STRING("[object XrayWrapper "));
result.AppendASCII(wrapperStr);
JS_smprintf_free(wrapperStr);
result.Append(']');
JSString *str = JS_NewUCStringCopyN(cx, reinterpret_cast<const jschar *>(result.get()),
result.Length());
if (!str)
return false;
*vp = STRING_TO_JSVAL(str);
return true;
}
template <typename Base, typename Policy>
XrayWrapper<Base, Policy>::XrayWrapper(uintN flags)
: Base(flags | WrapperFactory::IS_XRAY_WRAPPER_FLAG)
@ -391,7 +424,7 @@ XrayWrapper<Base, Policy>::getPropertyDescriptor(JSContext *cx, JSObject *wrappe
desc->attrs = JSPROP_ENUMERATE|JSPROP_SHARED;
desc->getter = wrappedJSObject_getter;
desc->setter = NULL;
desc->shortid = NULL;
desc->shortid = 0;
desc->value = JSVAL_VOID;
return true;
}
@ -413,6 +446,20 @@ XrayWrapper<Base, Policy>::getPropertyDescriptor(JSContext *cx, JSObject *wrappe
if (!ok || desc->obj)
return ok;
if (id == nsXPConnect::GetRuntimeInstance()->GetStringID(XPCJSRuntime::IDX_TO_STRING)) {
desc->obj = wrapper;
desc->attrs = 0;
desc->getter = NULL;
desc->setter = NULL;
desc->shortid = 0;
JSObject *toString = JS_NewFunction(cx, XrayToString, 0, 0, holder, "toString");
if (!toString)
return false;
desc->value = OBJECT_TO_JSVAL(toString);
return true;
}
return JS_GetPropertyDescriptorById(cx, holder, id,
(set ? JSRESOLVE_ASSIGNING : 0) | JSRESOLVE_QUALIFIED,
desc);